Cecil Bon Killemoff, Madman

Whenever a murderer you control attakcs, it gains indestructible until end of turn.
+1: Choose a creature type. Put a -1-1 counter
on each creature of that type.
-2: Destroy up to 3 target artifacts. Deal 3
damage to each opponent.
-8: Gain control of all creatures, untap them, they
gain haste. At the beginning of your next end
step, sacrifice all creatures you control.